Collapsible tube



G. W. FULLEQTON. CDLLAPSIBLE TUBE.

APPLICATION FILED JUNE I3. 1919.

Patented Dec. 5, 1922.

INVENTOR.

ATTORNEY.

Patented Dec. 5, 19.22. I

UNITED STATES PATENT oF-.FlclI-z.

GEORGE W. FULLEBTDN, 0E CINCINNATI, OHIO.

coLLarsIBLE TUBE 'y 4Applimition med June 13, 1919. Serial No. 308,912.

To all whom z't may concer/n.:

Be it known that I, GEORGE W. FIIILLER-v TON, a citizen of the UnitedStates, and a resident of the city of Cincinnati, in the county ofHamilton and State of Ohio, have invented certa-in new and usefulImprovements in Collapsible Tubes, of which the following specificationis a full, clear, and exact description, reference being had to theaccompanl ing drawings, forming a part of this spec' cation.

My invention relates to collapslble tubes, and has as its object,provision ofa closure for such tubes, which can be quickly and easilyattached and which provides against caking of material in the mouth ofthe tube.

vI am aware that in the past, collapsible tubes have been adopted forthe containing of glue, in which pins have been'provided 1n connectionwith the closures for maintaining a clear passageway for squeezing outthe glue, and also that caps have been provided for collapsible tubeswhich have tapered buttons seated in the mouth of the tube opensharppointed pin does not serve to provide suicient opemng to prevent cakngin the mouth of the tube and tapered or pointed buttons when inserted ina tube will force certain quantities of the material out of the mouthinto the hollow of any cap that may be employed.

I have discovered, however, that a tapered portion having dat pins maybe used in connection with an desired cap for collapsible tubes and willecp the mouth of the tube clean and force none of the contents of thetube into the hollow of the cap.

My discoveries and objects I carry out v'by that certain constructionand arrangement of parts to be hereinafter more specifically pointed outand claimed.

In the drawings,

Figure 1 is a side elevation of a tube showing a cap in place.

Figure 2 is a like view showing a cap removed.

Figure 3 is an enlarged section taken through the mouth of the tube.

Fi re 4 is a like section taken through the c osure, removed from thetube.

Figure 5 is a perspective view of the stopper.

Figure 6 and Figure 7 are a section and perspectiveviews respectively ofmodified caps.

1 is any desired collapsible tube having the top 2 and the neck 3. Ipreferably form between the top and neck a bevel 4. The tube has a mouthat the base of which Amay be formed a bevel 6.

The c losure is formed of a cap- 7 having a depending flange 8 of a sizeto t the outside of the neck and of a length to come down against thebevel 4. Intermediate I preferabl formA an interior bevel 9.

Xten-ding down centrally over the under side'of the cap is a post 10,adapted to fit into the mouth of the top and surmounted by a short bevel11.

It should be noted, particularly, that the' base 10A, of the post 10 isflat and that it may be concave. The result of this is that when the ostis inserted in the mouth of the tube it will not displace the materialthat has been squeezed into the mouth except to force it back down intothe tube thereby maintaining the tube sealed against the air, free ofany drying and caking material in or about the closure.

In use, one or more of the bevels that have been shown may be omitted,but it should be noted that the bevels are on a very small an-l gle andwill permit of the closure being given a twisting pressure which willtightly retain it inplace against dislodgment, since the metal in tubesof this character is fairly soft. The post 10 also serves to guide the'closure to its seat and retain it against lateral blows. The cap 13 inFigure 6 has a thread cut therein and screws on a threaded neck 14. Thepost 10 having a bevel 11 is the same as the other constructions. Inthis modification the cylindrical,- iat, bottomed post prevents theforcing of the tube contents out of the :mouth when inserting the gosts.The cap 15 has a flat post 16, with a evel 17, and the interior of thecap has a bevel 18. The bevel 4 of the tubes (Figures 1 4) may be usedalso and a fairly tight fit may be obtained.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is a width to snugly it said cylindrical neck,said upper end being substantially sharply bevelled to a size largerthan the mouth of the neck, and said post having a flat or concaved end,for the purpose described.

, 2. The combination of a collapsible tube having a cylindrical neck ofsubstantially soft metal, a cap, a fiange depending from the ed e of thecap to engage over the outside o said neck, and a depending post at thecenter of the cap, said post being cylindrical throughout its length,except at a small space at the upper end thereof and of a Width tosnugly fit said cylindrical neck, said upper end being substantiallysharply bevelled toa size larger than the mouth of the neck, andsaid-posthaving a flat or concaved end, for the purpose described, andthe iange of said cap being cylindrical throughout its length except atthe upper end thereof where it is bevelled sharply to a size smallerthan the outside of the neck.

#GEORGE W. FULIJERTON.l

